[pookietuesdays]

I think you are right and I'm combining one thing said by Zuckerberg and another mentioned here by Graham

http://www.paulgraham.com/hiring.html

"Or more precisely, I think few realize the huge spread in the value of 20 year olds. Some, it's true, are not very capable. But others are more capable than all but a handful of 30 year olds."

So I am wrong

edit: I found where I am attributing Graham from. I am still wrong, but here is the context:

"Venture capitalists have a notorious bias against older founders—“older” being relative in youth-obsessed Silicon Valley. “The cutoff in investors’ heads is 32,” Y Combinator co-founder Paul Graham (now 53) told the New York Times in 2013. “After 32, they start to be a little skeptical.”

https://www.nytimes.com/2013/05/05/magazine/y-combinator-sil...

[engineerDave]

I would bet the angle is that programmers in their 20s are less likely to push back against things like on working conditions and demands on their time. Basically get them while they’re young and dumb